Remove dead code

Author: premun

src/2024/06/Program.cs

@@ -4,15 +4,7 @@
 char[,] map = Resources.GetInputFileLines().ParseAsArray();
 Coor start = map.AllCoordinates().First(c => map.Get(c) == '^');
 
-var directions = new Dictionary<char, Coor>
-{
-    { '^', Coor.Up },
-    { '>', Coor.Right },
-    { 'V', Coor.Down },
-    { '<', Coor.Left },
-};
-
-Simulate(map);
+Simulate(map, start);
 var traversedPath = map.AllCoordinates()
     .Where(c => map.Get(c) != '.' && map.Get(c) != '#')
     .ToList();
@@ -24,7 +16,7 @@
     {
         var newMap = Resources.GetInputFileLines().ParseAsArray();
         newMap.Set(path, '#');
-        Simulate(newMap);
+        Simulate(newMap, start);
     }
     catch (LoopException)
     {
@@ -35,20 +27,18 @@
 Console.WriteLine($"Part 1: {traversedPath.Count}");
 Console.WriteLine($"Part 2: {possibleObstaclePositions}");
 
-static void Simulate(char[,] map)
+static void Simulate(char[,] map, Coor position)
 {
-    var position = map.AllCoordinates().First(c => map.Get(c) == '^');
     var direction = Coor.Up;
-    map.Set(position, (char)0);
 
     while (true)
     {
         var current = map.Get(position);
-        map.Set(position, (char)(current switch
+        map.Set(position, current switch
         {
-            '.' => 1,
-            _ => current + 1,
-        }));
+            '.' => '0',
+            _ => (char)(current + 1),
+        });
 
         var next = position + direction;
         if (!next.InBoundsOf(map))
@@ -64,7 +54,7 @@ static void Simulate(char[,] map)
 
         // We can only come to a field twice (from side and from top/down)
         // If we come a third time, it's a loop
-        if (map.Get(next) != '.' && map.Get(next) > 3)
+        if (map.Get(next) != '.' && map.Get(next) == '3')
         {
             throw new LoopException();
         }